Bring 1 1/2 quarts water to boil in a medium pot. Add potatoes and 1 tsp. salt. Lower heat and simmer until potatoes are tender but not falling apart, 8 minutes. Drain and set aside.,______,Preheat broiler. Whisk together eggs, ham and parsley; season mixture with pepper. Distribute vegetables evenly in pan and pour in egg mixture. Cook over medium-low heat, occasionally sliding a thin spatula around edges of pan to loosen eggs as they set. Continue to cook until frittata is set except for top, 7 minutes.,Place pan under broiler and cook until top is golden, 1 to 2 minutes. Cut into wedges and serve.